Auxiliary positioning and jacking mechanism for engine exhaust pipe orifice

Abstract

The utility model relates to an auxiliary positioning and jacking mechanism for a pipe orifice of an engine exhaust pipe, which is characterized by comprising a base, two parallel vertical plates arranged on the base and a top plate fixed on the upper end surfaces of the two vertical plates, the base is provided with a first supporting nail used for supporting and positioning the bottom of the first end of a workpiece and a first supporting column used for limiting the lateral direction of the first end of the workpiece. A second supporting nail and a third supporting nail which are used for limiting the lateral direction of the second end of the workpiece are fixedly arranged on the lower surface of the top plate, two connecting blocks which are arranged at intervals are fixedly arranged on the lower surface of the top plate, the middle portions of swing arms are rotationally hinged to the connecting blocks, and the first ends of the swing arms abut against the lower surface of a flange of the second end of the workpiece. The engine exhaust pipe orifice auxiliary positioning and jacking mechanism has the advantages that the engine exhaust pipe orifice auxiliary positioning and jacking mechanism is simple in structure and low in manufacturing cost, quick clamping can be favorably realized, and the working efficiency can be improved.

Description

Technical field:

[0002] The utility model relates to an auxiliary positioning and tightening mechanism for an engine exhaust pipe orifice. Background technology:

[0004] The exhaust pipe openings of engines are all irregularly shaped. Usually, the processing tooling of the exhaust pipe openings of engines is relatively complicated, which makes it difficult to clamp the workpiece. For example, the Chinese patent "A welding positioning clamping device for a light truck engine exhaust pipe silencer" with announcement number CN211438795U includes a flange clamping structure, a three-claw clamping structure, and a self-centering clamping structure; the flange clamping structure includes a fixed seat, a flange clamping structure and a flange positioning plate; the flange clamping structure includes a driving cylinder, two hinge seats A symmetrically arranged on the fixed seat, two hinge seats B symmetrically arranged and respectively slidably connected to the hinge seats A, a connecting rod hinged to the two hinge seats B at both ends, and two pressing claws fixedly connected to the hinge seats B; the telescopic rod of the driving cylinder is connected to the middle part of the connecting rod; the driving cylinder pushes and pulls the connecting rod to drive the hinge seat B to move relative to the hinge seat A, thereby driving the pressing claw to press the flange of the muffler on the flange positioning plate. The positioning clamping device of this patent has a complex structure and high manufacturing cost. Summary of the invention:

[0006] In view of the above-mentioned problems, the purpose of the utility model is to propose an auxiliary positioning and tightening mechanism for the engine exhaust pipe orifice, which has a simple structure and low manufacturing cost, is conducive to rapid clamping and improves work efficiency.

[0007] The auxiliary positioning and tightening mechanism of the exhaust pipe of an engine according to the present invention is characterized in that it comprises a base, two parallel vertical plates arranged on the base and a top plate fixed on the upper surfaces of the two vertical plates. The base is provided with a first supporting nail for supporting the bottom of the first end of the positioning workpiece and a first supporting column for limiting the lateral direction of the first end of the workpiece; a second supporting nail and a third supporting nail are fixedly arranged on the lower surface of the top plate for limiting the lateral direction of the second end of the workpiece; two spaced connecting blocks are fixedly arranged on the lower surface of the top plate. The middle part of the swing arm rotatably hinged on the connecting block, the first end of the swing arm is pressed on the lower surface of the flange of the second end of the workpiece, so that the pipe mouth of the second end of the workpiece is positioned in the sink groove hole on the lower surface of the top plate, the second ends of the two swing arms are rotatably hinged at the two ends of a connecting rod, a cam block capable of driving the connecting rod to lift upward is provided below the connecting rod, the cam block is connected to the inner end of a swing rod, the outer end of the swing rod extends out of the vertical plate and is connected to a manual rod, and a pressure block driven by a cylinder to push the connecting rod down is provided above the connecting rod.

[0008] Preferably, a tensioned spring is connected between the middle portion of the manual rod and the base, and a limit rod is provided on the outer side surface of the vertical plate for limiting the manual rod from being pulled downward.

[0009] Preferably, a column is provided on the base, and a quick clamp opposite to the first support column is provided on the column.

[0010] Preferably, a compression spring is provided between the upper surface of the second end of the swing arm and the lower surface of the top plate.

[0011] Preferably, the upper surface of the top plate is provided with a through hole opposite to the sink hole.

[0012] Preferably, the swing rod and the vertical plate are clearance-matched so that the swing rod can rotate smoothly.

[0013] Preferably, a rectangular groove is provided on the top plate, a through hole is provided in the rectangular groove, the cylinder is fixedly provided with the rectangular groove, and the telescopic rod of the cylinder passes through the through hole and is connected with the pressing block.

[0014] The method for using the auxiliary positioning and tightening mechanism for the outlet of an engine exhaust pipe of the utility model is that the operator lifts the free end of the manual lever to overcome the tension of the spring, so that the manual lever drives the swing lever and the cam block to rotate around the axis of the swing lever, thereby pushing the second end of the connecting rod and the swing arm to rise and the first end of the swing arm to fall. At this time, the flange at the second end of the workpiece (engine exhaust pipe) can be pushed between the lower surface of the top plate and the upper surface of the first end of the swing arm. The operator releases the manual lever, and the manual lever swings under the tension of the spring (the swing is limited by the limit rod), with The movable swing rod and the cam block rotate around the axis line of the swing rod, thereby pushing the second end of the connecting rod and the swing arm to descend and the first end of the swing arm to rise. At the same time, the bottom of the first end of the workpiece is supported on the first supporting nail, and the first supporting column limits the lateral direction of the first end of the workpiece. The lateral direction of the second end of the workpiece is limited by the second supporting nail and the third supporting nail. Thereafter, under the action of the cylinder, the pressing block pushes the second end of the connecting rod and the swing arm downward and the first end of the swing arm upward, so that the first end of the swing arm presses the pipe mouth of the workpiece tightly in the countersunk hole on the lower surface of the top plate, thereby fixing the workpiece.

[0015] The auxiliary positioning and tightening mechanism for the exhaust pipe orifice of the engine of the utility model has a simple structure and low manufacturing cost, is conducive to realizing rapid clamping, and improves work efficiency. Description of the drawings:

[0017] The utility model is further described below in conjunction with the accompanying drawings;

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is an exploded view of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the utility model from another perspective (top plate omitted);

[0021] Figure 4 It is a cross-sectional view of the utility model. Specific implementation method:

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The auxiliary positioning and tightening mechanism for the exhaust pipe orifice of an engine of the utility model comprises a base 1, two parallel vertical plates 2 arranged on the base 1 and a top plate 3 fixed on the upper end surfaces of the two vertical plates 2. The base 1 can be a rectangular plate fixed on a machine platform, and the vertical plates 2 and the top plate 3 can both be rectangular plates.

[0025] The base 1 is provided with a first supporting nail 4 for supporting and positioning the bottom of the first end of the workpiece A and a first supporting column 5 for limiting the side of the first end of the workpiece; the base is provided with a column 6, and the column 6 is provided with a quick clamp 7 opposite to the first supporting column. The quick clamp 7 is an existing commonly used component, and the specific structure and working method will not be repeated here.

[0026] The lower surface of the top plate is fixed with a second support nail 8 and a third support nail 9 for limiting the lateral direction of the second end of the workpiece. The first support nail 4, the second support nail 8 and the third support nail 9 are all positioning pins with fixed ends.

[0027] Two spaced connection blocks 10 are fixedly provided on the lower surface of the top plate, and the middle part of the swing arm 11 is rotatably hinged on the connection block 10, that is, the upper surface of the connection block 10 is fixed on the lower surface of the top plate, and the middle part of the swing arm 11 is rotatably hinged with the connection block, and the first end of the swing arm 11 is pressed against the lower surface of the flange A1 of the second end of the workpiece so that the pipe mouth of the second end of the workpiece is positioned in the countersunk hole 12 on the lower surface of the top plate 3. The second ends of the two swing arms 11 are rotatably hinged at the two ends of a connecting rod 13, and a cam block 14 that can drive the connecting rod to lift upward is provided below the connecting rod 13, and the cam block 14 is connected to the inner end of a swing rod 15, and the outer end of the swing rod 15 extends out of the vertical plate 2 and is connected to a manual rod 16, and the swing rod and the vertical plate are clearance-matched so that the swing rod can rotate smoothly, and a pressure block 18 driven by a cylinder 17 to push the connecting rod down is provided above the connecting rod.

[0028] When in use, the operator lifts the free end of the manual rod to overcome the spring tension, so that the manual rod drives the swing rod and the cam block to rotate around the axis of the swing rod, thereby pushing the second end of the connecting rod and the swing arm to rise and the first end of the swing arm to fall. At this time, the flange of the second end of the workpiece (engine exhaust pipe) can be pushed between the lower surface of the top plate and the upper surface of the first end of the swing arm. The operator releases the manual rod, and the manual rod swings under the tension of the spring (the swing is limited by the limit rod), driving the swing rod and the cam block to rotate around the axis of the swing rod, thereby pushing the second end of the connecting rod and the swing arm to fall and the first end of the swing arm to rise. At the same time, the bottom of the first end of the workpiece is supported on the first supporting nail, and the first supporting column limits the first end of the workpiece laterally, and the second end of the workpiece is limited laterally by the second supporting nail and the third supporting nail. Thereafter, under the action of the cylinder, the pressing block pushes the second end of the connecting rod and the swing arm downward and the first end of the swing arm upward, so that the first end of the swing arm presses the pipe mouth of the workpiece tightly in the countersunk hole on the lower surface of the top plate, thereby fixing the workpiece.

[0029] For ease of use and reasonable design, a tensioned spring 19 is connected between the middle of the manual rod 16 and the base 1 , and a limit rod 20 for limiting the manual rod 16 from being pulled down by the spring 19 is provided on the outer side of the vertical plate.

[0030] For the convenience of use, reasonable design and facilitating the recovery of the swing arm, a compression spring 21 is provided between the upper surface of the second end of the swing arm and the lower surface of the top plate.

[0031] The upper surface of the top plate is provided with a through hole 22 opposite to the countersunk hole, through which other connecting components can be installed in the second end pipe opening of the workpiece.

[0032] The top plate is provided with a rectangular groove 23, in which a through hole 24 is provided. The cylinder is fixed with the rectangular groove 23, and the telescopic rod of the cylinder passes through the through hole and is connected with the pressing block 18.

[0033] The utility model discloses a method for using an auxiliary positioning and tightening mechanism for an engine exhaust pipe orifice. The utility model has a simple structure and a low manufacturing cost, is conducive to realizing rapid clamping, and improves work efficiency.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. An auxiliary positioning and tightening mechanism for an engine exhaust pipe orifice, characterized in that: The lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of 2. The auxiliary positioning and tightening mechanism for the engine exhaust pipe orifice according to claim 1, characterized in that: A tensioned spring is connected between the middle of the manual rod and the base, and a limiting rod for limiting the manual rod from being pulled downward is arranged on the outer side of the vertical plate.

3. The auxiliary positioning and tightening mechanism for the engine exhaust pipe orifice according to claim 1 or 2, characterized in that: A column is arranged on the base, and a quick clamp opposite to the first supporting column is arranged on the column.

4. The auxiliary positioning and tightening mechanism for the engine exhaust pipe orifice according to claim 3, characterized in that: A compression spring is arranged between the upper surface of the second end of the swing arm and the lower surface of the top plate.

5. The auxiliary positioning and tightening mechanism for the engine exhaust pipe orifice according to claim 4, characterized in that: The upper surface of the top plate is provided with a through hole opposite to the sink hole.

6. The auxiliary positioning and tightening mechanism for the engine exhaust pipe orifice according to claim 5, characterized in that: The swing rod and the vertical plate are clearance-matched so that the swing rod can rotate smoothly.

7. The auxiliary positioning and tightening mechanism for the engine exhaust pipe orifice according to claim 5, characterized in that: The top plate is provided with a rectangular groove, a through hole is provided in the rectangular groove, the cylinder is fixed with the rectangular groove, and the telescopic rod of the cylinder passes through the through hole and is connected with the pressing block.

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